# Description: libclc is an implementation of the library requirements of the OpenCL C programming language
# URL: https://libclc.llvm.org/
# Maintainer: Tim Biermann, tbier at posteo dot de
# Depends on: clang lld spirv-llvm-translator

name=libclc
version=23.1.1
release=1
source=(https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/llvm-project-$version.src.tar.xz)

build() {
  # Strip mcpu|march|mtune flags
  shopt -s extglob
  CFLAGS="${CFLAGS// -@(mcpu|march|mtune)=+([![:space:]]) / }"
  CXXFLAGS="${CFLAGS}"
  shopt -u extglob

  local cmake_options=(
    -S llvm-project-$version.src/libclc -G Ninja
    -D CMAKE_INSTALL_PREFIX=/usr
    -D CMAKE_INSTALL_LIBDIR=lib
    -D CMAKE_BUILD_TYPE=Release
    -D CMAKE_CXX_FLAGS_RELEASE="$CXXFLAGS"
    -D CMAKE_C_FLAGS_RELEASE="$CFLAGS"
    -D LIBCLC_USE_SPIRV_BACKEND=ON
  )

  targets=(
    amdgcn-amd-amdhsa-llvm
    nvptx64-nvidia-cuda
    spirv32-unknown-unknown
    spirv64-unknown-unknown
    spirv32-unknown-vulkan
    spirv64-unknown-vulkan
  )
  # libclc is intended to be used with the Clang compiler's OpenCL frontend
  export CC=clang CXX=clang++ AR=llvm-ar NM=llvm-nm RANLIB=llvm-ranlib LDFLAGS+=' -fuse-ld=lld'

  for target in "${targets[@]}"; do
    cmake "${cmake_options[@]}" -B build-$target \
      -D LLVM_DEFAULT_TARGET_TRIPLE="$target" \
      -Wno-dev
    cmake --build build-$target
    DESTDIR=$PKG cmake --install "build-$target"
  done
}